{% block css %}
<style>
  .block-navigation{
    
  }
</style>    

{% endblock %}
<nav class="navbar navbar-default block-navigation" xmlns="">
    <div class="container-fluid">
      <!-- Brand and toggle get grouped for better mobile display -->
      <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
          <span class="sr-only">Toggle navigation</span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
          <span class="icon-bar"></span>
        </button>

      </div>
  
      <!-- Collect the nav links, forms, and other content for toggling -->
      <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav">
          <li><a class="navbar-brand" href="/">首页</a></li>
          <li><a href="{% url 'main:bookstore' %}">书库</a></li>

          <li><a href="{% url 'main:ranking' %}">排行榜</a></li>
        </ul>
        <form class="navbar-form navbar-left" method='get' action="/search/" target="_blank">
          <div class="form-group">
            <input  name="q" type="text" class="form-control" placeholder="Search">
          </div>
          <button type="submit" class="btn btn-default">搜索</button>
        </form>
        <ul class="nav navbar-nav navbar-right">
          {% if not request.user.is_authenticated %}
          <li><a href="{% url 'user:login' %}">登录</a></li>
          <li><a href="{% url 'user:register' %}">注册</a></li>
          {% else %}
          <li class="dropdown">
            <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">账号信息<span class="caret"></span></a>
            <ul class="dropdown-menu">
              <li><a href="{% url 'user:person' %}">{{ request.user.username }}</a></li>
              <li><a href="{% url 'bookshelf:collect' %}">我的书架</a></li>
              <li><a href="{% url 'user:logout' %}">退出</a></li>
            </ul>
          </li>
          {% endif %}
  
  
  
        </ul>
      </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
  </nav>